Epidural AbscessAbscessDiscitisEpidural SpaceAnalgesiaAnalgesia, EpiduralSpinal DiseasesBrain AbscessLiver AbscessAnalgesia, ObstetricalOsteomyelitisPsoas AbscessAnesthesia, EpiduralStreptococcus milleri GroupAbdominal AbscessLaminectomyAnalgesia, Patient-ControlledLung AbscessDecompression, SurgicalStaphylococcal InfectionsCervical VertebraePasteurellaceae InfectionsFistulaLiver Abscess, AmebicAnalgesics, OpioidMagnetic Resonance ImagingSpinal Cord DiseasesSpondylitisPain, PostoperativeDrainageLiver Abscess, PyogenicAnti-Bacterial AgentsDebridementCatheterization